Ingot mold



E. GATHIVIANN.

INGOT MOLD.

APPLICATION FILED 1AN.10, 1.922.

LA@ 994549 Patented June i3, i922.

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EMIL'GATHMAN'N, OF BALTIMORE, MARYLAND.

INGOT MOL-D.

To all whom t may cof/acera:

Be it known that I, EMIL GATHMANN, a citizen of the United States, residing in the city ofBaltimore and State of' Maryland, have invented certain new ani/d useful Improvements` in Ingot Molds, of which the following is a specification.

This invention relates to molds for cast-- ing ingots, in which the mold is top poured, and is provided with an opening in the bottom which receives a stripping plug or other device for closing the bottom opening and for raising the ingot in the mold cavity preparatory to its withdrawal from the mold, or to receive some other device which closes it during the pouring operation. I

In m prior patents' of Feb. 8, 1916,

No. 1,170,629, June 27, 1916, No. 1,188,751,

and Dec. 19, 1916, No. 1,209,283, I have. shown molds of the kind referred to in which provision is made for sealing the opening in the bottom of themold and for'protecting the top or inner end of the stripping plug or the plug of the mold stool which projects into said bottom opening and for preventing the iipid ingot from sticking to the top of the u p Iii my patents of Feb. 8, 1916, and Dec. 19, 1916, I have shown flanged plates which rest on the top of the stripping plug4 or on the top of the stool plug and serve to seal the opening and protect the plug. The sealing devices shown in said patents are loosely mounted on the plug and when metal is poured into' the mold the plate sometimes is loosened and moved out of place, at times floating up in'to the liquid ingot. l

The object of my present invention is to so construct the sealing devices that they will not only securely seal the bottom opening of the mold and protect the stripping plug or stool plug and a portion of the bottom wall of the mold from injury but will remain in place when metal is being poured into the mold.

In carrying out my invention, I employ a suitable sealing plate with devices which lock it against accidental displacement. In one form of my invention, where a' stripping .plug is used, the latter is made hollow and a central opening is made in the sealing plate through which a pin or bolt is passed which extends into the hollow plug and locks the plate to the plug.

In another form of the invention the plate Application' filed January 10, 1922.

Specication of Letters Patent. Patented Jun@ 113, 1922,

Serial No. 528,219.

is made integral with the pin and is extendthe properly formed bottom wall of the mold cavity and on the hollow plug extending upwards from the mold stool into the bottom opening of the mold and a pin is employed for connecting the plate to the plug.

Other features will be hereinafter explained.

In the accompanying drawings:-

Figure y1 is a vertical section through a mold with my improvements applied.

Figure 2 is a perspective view of the sealing plate and locking pin.

Figure 3 is a View on an enlarged scale of the upper and lower portions of a mold, showing a modified form of sealing plate and pin.

`Figure't is `a sectional view of the lower portion of a mold with a bottom opening and showing a mold Stool formed with a plug v4which extends into said opening, a sealing' plate with the locking devices being employed to close the opening in the plug.

The drawings show my improvements aplplied to well known forms of Gathmann molds. In the several figures of the drawings the mold poper is indicated at A, the mold stool at and the sink head at C. rIhese may be of any desired construction.

In each case the mold is of the top-poured kind and has an opening L in the vbottom to receive a stripping plug D or a stool plug D. In Figures '1 and 3 the stool shown is formed with anopening b into which the stripping plug D extends, while in Figure the stool is provided with a plug DI which extends into the bottom opening of the mold.

The stool and plug are formed with a vertical openin e.

` Inasmucflri as the stripping plug does not fit tightly in the bottom opening of the mold, some metal will pass through the opening between the walls thereof and the plug unless provision is made for preventing it, and

I now, as heretofore', use a sealing plate F for preventing leakage. Inasmuch as the mold is toppoured, the impact of the metal the sealing plate sometimes dislodges it, and in order to prevent this I have provided defri/I; irrite i su:

vices which effectively lock the sealing plates in position.

ln Figures l and 2 the plate F is formed with a central opening through which a headed pin Gr is passed. rThe stem or shank ot the pin extends into the bore of the plug D and thus lateral displacement of the plate is prevented. lt will be observed that the plate is seated in a recess in the bottoni ot' the mold which is of somewhat greater diameter than that of the plate. lf, when the metal is poured, it enters the recess between the edge of the plate and the recess wall it will sometimes dislodge the plate and at times this plate will float into the liquid ingot. By employing the pin Gr this separa.- tion of the sealing plate from the lower part of the mold is prevented. lit will be understood that when the ingot is cast the mold is lifted from its stool and then dropped or placed on a support which forces the stripping plug into the mold and raises the ingot. The ymold may then be reversed ,and the ingot dropped, or lifting tongs may be applied to the top of the ingot for lifting it from the mold.

rlhis is the usual practice. When the ingot is hardened it will be found that the sealing plate is welded to its lower end and the locking pin is also firmly attached to the lower end ott' the ingot and is, with the plate,

l lost in the crop, but it will be observed that the more expensive stripping plug is' not welded to the ingot but remains in the mold and may be repeatedly used.

There is an advantage in using a hollow stripping plug aside from the Jtact that it atl'ords means for attaching the sealing plate to the plug because itis often necessary to clean the mold to remove dirt and dust therefrom without removing the stripping plug. When an ingot has been withdrawn with the sealing plate and pin air may be blown into the top of the mold and dirt blown out Jfrein the bottom through the hollow stripping plug.

In Figure 8 a somewhat similar construction to that shown in Figure l is illustrated. ln this case, however, ythe pin is made integral with the sealing yplate and the pin is p split so that it will have some resiliency. lt

also has a tapered end which facilitates its entrance into the hollow plug. When the pin is inserted it will tightly fit the plug.

ln Figure 4f ll have shown a construction in which instead of using a stripping plu l employ a stool E having a hollow plug lg which extends into the bottom opening of the mold. The sealing plate rests on a seat in the bottom of the mold cavity and on the top of the plug. A pin Gr extends through a hole 1n the plate and into the hole in the plug and stool. VVhen the mold is stripped it is raised from the stool and placed over a suitable stripper which loosens the ingot and raises it. The ingot may then be removed i'rom the mold in any well known way.

lt will be observed that the recess c in which the sealing plate is seated is somewhat deeper than the thickness of the plate and there is in such construction less liability for the plate to 'tilt or move out of place. All of the devices shown provide ellective means for protecting the bottom of the mold cavity and the top of the plug from injury by incoming molten metal and foralso preventing leakage through the bottom opening of the mold which would tend to` form fins impeding or preventing the easy stripping of the ingot.

lVhile the construction of sealing plate and pin shown in Figure 3 is cheap' and eilicient, that shown in Figures 1 and l is somewhat less expensive as the plate may be toi-ined from scrap, sheet metal and the pins or bolts of suitable kind may be easily formed oi-bar iron.

lt will be observed that the lower portion of' the mold cavity is shown as being neckedin toward the bottom opening oi' the mold. rll"`he advantages of this construction are fully described in my Patent No. 1,209,283 of Dec. i9, i916.

, l claim as my invention l. An ingot mold having a bottom opening, a plug extending into said opening, a sealing plate resting on the bottom of the mold above the plug, and means for locking the sealing plate in position.

2. An ingot mold having a bottom opening having a necked-inA portion surrounding the bottom opening, a plug extending into said opening, a scaling plate resting on the plug and on the bottom of the mold, and 105 means for locking the sealing plate in position.

3. An ingot mold havinga bottom opening. a plug extending into said opening, a sealing plate retsing on the plug, and means 110 for locking the sealing plate to the plug.

4. An ingot mold having a bottom opening having a necked-in portion surrounding the bottom opening, a plug extending into said opening, a sealing plate resting on the 115 bottom of the mold cavity, and means for locking the sealing plate to the plug.

5. A n ingot mold having a bottom opening, a necked-in `portion surrounding the bottom opening and a hollow stripping plug 120 seated in said opening.

6. An ingot mold having a bottom opening, a hollow plug` seated in said opening, and means within said mold for closing said opening. y

7. A top-poured ingot mold having a bottom opening, a hollow plug seated in said opening, and a sealing plate within the mold detachably connected with the hollow plug.

8. A top-poured ingot mold having a bot- 130 'tom opening, a sealing plate within the mold Cavity resting on the bottom wall of the mold cavity on opposite sides of theopening for closing said opening, and means for rlocking the sealing plate in position to prevent its floating into the liquid ingot.

9. A top-poured ingot mold having a bottom opening having a necked-in portion surrounding the bottom opening, a Sealing plate closing said opening, and a stem or pin eX- tending from said plate into the bottom opening of the mold.

l0. A top-poured ingot mold having a bottom opening, a hollow plug in said opening,`

subscribed my name.

nMiL Getint/leien ln testimony whereof, l have hereunto 25 

